def chooseOutputFile(self):
# get last used dir
settings = QSettings()
lastUsedDir = settings.value(self.lastUsedVectorDirSettingsKey, ".")
# get selected filter
selectedFilter = self.cboFileFormat.itemData(self.cboFileFormat.currentIndex())
# ask for a filename
filename, filter = QFileDialog.getSaveFileName(self, self.tr("Choose where to save the file"), lastUsedDir,
selectedFilter)
if filename == "":
return
filterString = QgsVectorFileWriter.filterForDriver(selectedFilter)
ext = filterString[filterString.find('.'):]
ext = ext[:ext.find(' ')]
if not filename.lower().endswith(ext):
filename += ext
# store the last used dir
settings.setValue(self.lastUsedVectorDirSettingsKey, QFileInfo(filename).filePath())
self.editOutputFile.setText(filename)
def chooseOutputFile(self):
# get last used dir
settings = QgsSettings()
lastUsedDir = settings.value(self.lastUsedVectorDirSettingsKey, ".")
# get selected filter
selectedFilter = self.cboFileFormat.currentData()
# ask for a filename
filename, filter = QFileDialog.getSaveFileName(
self, self.tr("Choose where to save the file"), lastUsedDir,
selectedFilter)
if filename == "":
return
filterString = QgsVectorFileWriter.filterForDriver(selectedFilter)
ext = filterString[filterString.find('.'):]
ext = ext[:ext.find(' ')]
if not filename.lower().endswith(ext):
filename += ext
# store the last used dir
settings.setValue(self.lastUsedVectorDirSettingsKey,
QFileInfo(filename).filePath())
self.editOutputFile.setText(filename)
def runAndCreateLayer(parent):
geomDialog = QgsNewVectorLayerDialog(parent)
if (geomDialog.exec_() == QDialog.Rejected):
return ""
geometrytype = geomDialog.selectedType()
fileformat = geomDialog.selectedFileFormat()
enc = geomDialog.selectedFileEncoding()
crsId = geomDialog.selectedCrsId()
print(QString("New file format will be: %1").arg(fileformat))
attributes = dict()
geomDialog.attributes(attributes)
settings = QSettings()
lastUsedDir = settings.value("/UI/lastVectorFileFilterDir",
QDir.homePath()).toString()
filterString = QgsVectorFileWriter.filterForDriver(fileformat)
fileName = QFileDialog.getSaveFileName(parent, "Save layer as...",
lastUsedDir, filterString)
if (fileName.isNull()):
return ""
if (fileformat == "ESRI Shapefile"
and not fileName.endsWith(".shp", Qt.CaseInsensitive)):
fileName += ".shp"
settings.setValue("/UI/lastVectorFileFilterDir",
QFileInfo(fileName).absolutePath())
settings.setValue("/UI/encoding", enc)
#try to create the new layer with OGRProvider instead of QgsVectorFileWriter
pReg = QgsProviderRegistry.instance()
ogrlib = pReg.library("ogr")
# load the data provider
myLib = QLibrary(ogrlib)
loaded = myLib.load()
constructionLineLayer = None
mapUnits = define._canvas.mapUnits()
layerName = String.QString2Str(fileName).split("\\")[-1]
path = "memory"
selectedCrs = geomDialog.selectedCrs()
if geometrytype == QGis.Line:
# if mapUnits == QGis.Meters:
constructionLineLayer = QgsVectorLayer(
"linestring?crs=%s" % selectedCrs.authid(), layerName, path)
# else:
# constructionLineLayer = QgsVectorLayer("linestring?crs=%s"%define._latLonCrs.authid (), layerName, path)
elif geometrytype == QGis.Polygon:
# if mapUnits == QGis.Meters:
constructionLineLayer = QgsVectorLayer(
"polygon?crs=%s" % selectedCrs.authid(), layerName, path)
# else:
# constructionLineLayer = QgsVectorLayer("polygon?crs=%s"%define._latLonCrs.authid (), layerName, path)
elif geometrytype == QGis.Point:
# if mapUnits == QGis.Meters:
constructionLineLayer = QgsVectorLayer(
"Point?crs=%s" % selectedCrs.authid(), layerName, path)
# else:
# constructionLineLayer = QgsVectorLayer("Point?crs=%s"%define._latLonCrs.authid (), layerName, path)
fieldList = []
for key in attributes.iterkeys():
fieldList.append(QgsField(key, attributes[key][0]))
constructionLineLayer.startEditing()
constructionLineLayer.dataProvider().addAttributes(fieldList)
constructionLineLayer.commitChanges()
er = QgsVectorFileWriter.writeAsVectorFormat(
constructionLineLayer, fileName, "utf-8",
constructionLineLayer.crs())
constructionLineLayer = QgsVectorLayer(fileName, layerName, "ogr")
QgisHelper.appendToCanvas(define._canvas, [constructionLineLayer],
"NewLayers")
# if ( loaded ):
# print( "ogr provider loaded" )
#
# typedef bool ( *createEmptyDataSourceProc )( const QString&, const QString&, const QString&, QGis::WkbType,
# const QList< QPair<QString, QString> >&, const QgsCoordinateReferenceSystem * )
# createEmptyDataSourceProc createEmptyDataSource = ( createEmptyDataSourceProc ) cast_to_fptr( myLib.resolve( "createEmptyDataSource" ) )
# if ( createEmptyDataSource )
# {
# if ( geometrytype not = QGis::WKBUnknown )
# {
# QgsCoordinateReferenceSystem srs = QgsCRSCache::instance().crsBySrsId( crsId )
# if ( not createEmptyDataSource( fileName, fileformat, enc, geometrytype, attributes, &srs ) )
# {
# return QString::null
# }
# }
# else
# {
# QgsDebugMsg( "geometry type not recognised" )
# return QString::null
# }
# }
# else
# {
# QgsDebugMsg( "Resolving newEmptyDataSource(...) failed" )
# return QString::null
# }
# }
#
# if ( pEnc )
# *pEnc = enc
return fileName
